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Finding the Fourth Proportional to 28,671.87, 43,006.28 and 8,948.17

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Solution

The fourth proportional to 28,671.87, 43,006.28 and 8,948.17 is: 13,421.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,671.87 : 43,006.28 = 8,948.17 : x
  2. Step 2: Convert to fraction form
    28,671.87/43,006.28 = 8,948.17/x
  3. Step 3: Cross multiply
    28,671.87x = 43,006.28 × 8,948.17
  4. Step 4: Simplify right side
    28,671.87x = 384,827,504.51
  5. Step 5: Solve for x
    x = 384,827,504.51/28,671.87
  6. Step 6: Final answer
    x = 13,421.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.